Chemistry Reference
In-Depth Information
OLIGOGLYCEROLS/
ACROLEIN/
ACETOL
O
O
HO
OH
d
n
9
r
3
n
g
|
0
HO
OH
Dehydration/
Oligomerisation
GLYCEROL
ACETALS
Acetalisation
GLYCEROL
O
OH
O
d
y
y
f
n
n
3
.
OH
O
HO
Carbonatation
Hydrogenolysis
GLYCEROL
CARBONATE
1,2-PROPANEDIOL
O
Acetylation
OH
O
O
O
HO
O
O
OH
O
O
O
O
+
O
O
+
O
OH
O
HO
OH
O
O
O
O
ACETIN MIXTURES
Scheme 6.7
Key chemistries explored.
Acrolein is a very interesting chemical from an industrial viewpoint where
much investigation has been made to find a sustainable production route.
The first parameters studied in glycerine were its stability at high temperatures
and the product's thermal decomposition profile. Dehydration of glycerol can
lead to compounds such as diglycerols and oligoglycerols, also at high
temperatures. These chemicals can find applications as building blocks for
polymers/specialty lubricants.
131
Esterification/Acetylation; esters of glycerol have well-known applications
within industry, for instance glyceryl acetates are well-known glycerol
derivatives with known uses for instance, as fuel additives
132
or plasticisers.
Hydrogenolysis/Acetalisation: with focus on the production of
1,2-propanediol (1,2-PDO), and condensation products of glycerol with
aldehydes. 1,2-PDO is employed in antifreeze/cooling formulations
133
and
glycerol acetals are valuable chemicals with use as fuel additives.
134
Carbonate synthesis; glycerol carbonate is a specialty chemical with appli-
cations as a solvent, epoxy resin and polymer precursor. The interest and
markets for its production from crude glycerol have grown over the last few
years.
135
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